great to see your still kicking,I am 59 too had melanoma tumers...not sure what RET+ is,how did they figure that out....I guess for two years on keytruda,I was napping 2-3 hours a day,after it effected my brain was more like getup coffee then back to sleep...now 3.5yrs I stay up all day but dont do much (funny enough sleeping is hard now)...might try Iron tabs,nothing to lose....
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